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Hi,
I have a tree used as my app menu, when user clicks a treeItem fires a selectEvent and the java method execute a context.loadView (targetJSP) to load the desired view into my work panel.
This is ok and it works fine but now I've created a new client widget, I've registered the namespace into the bjsf:application node and it works in every page except the ones that are loaded from the tree.
When the page are loaded I get and error:
Reference to undeclared namespace prefix: 'wtw'
As I said, the namespace is declared into the application node.
I've been looking at the response and server returns:
<e:script
xmlns="http://www.w3.org/1999/xhtml"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:b="http://www.backbase.com/2006/btl"
xmlns:e="http://www.backbase.com/2006/xel" xmlns:c="http://www.backbase.com/2006/command" xmlns:bjsfc="http://www.backbase.com/2007/jsf/client">
<c:create xmlns:b="http://www.backbase.com/2006/btl" xmlns:e="http://www.backbase.com/2006/xel" destination="id('principal')" mode="replaceChildren">
<wtw:wtwImporte id="txtimporte1"></wtw:wtwImporte>
</c:create>
</e:script>
xmlns="http://www.w3.org/1999/xhtml"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:b="http://www.backbase.com/2006/btl"
xmlns:e="http://www.backbase.com/2006/xel" xmlns:c="http://www.backbase.com/2006/command" xmlns:bjsfc="http://www.backbase.com/2007/jsf/client">
<c:create xmlns:b="http://www.backbase.com/2006/btl" xmlns:e="http://www.backbase.com/2006/xel" destination="id('principal')" mode="replaceChildren">
<wtw:wtwImporte id="txtimporte1"></wtw:wtwImporte>
</c:create>
</e:script>
As you can see, the wtw namespace is not declared, how can I declare it?
My page's code is:
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://www.backbase.com/2007/jsf" prefix="bjsf"%>
<f:subview id="importes">
<bjsf:view>
<wtw:wtwImporte id="txtimporte1"></wtw:wtwImporte>
</bjsf:view>
</f:subview>
<%@ taglib uri="http://www.backbase.com/2007/jsf" prefix="bjsf"%>
<f:subview id="importes">
<bjsf:view>
<wtw:wtwImporte id="txtimporte1"></wtw:wtwImporte>
</bjsf:view>
</f:subview>
Any help will be appreciated.
Thanks in advance.
David
There are two workarounds to
9 February, 2008 - 21:39 — dimitraThere are two workarounds to this issue that I can think of:
One is to add the namespace of your widget defined on the element itself and the other is to have within the response script a wrapper element around your widget where the namespace would be defined.
Sorry Dimitra, but I don't
10 February, 2008 - 10:22 — DavidSorry Dimitra, but I don't understand the first one, would you post some code or example to clarify me, please?
In attention to the second one, I've understood that I could wrap the BTL's wtw:wtwImporte component into a JSF component and this component will define the namespace, it isn't?
If don't, could you please give me more info?.
Thank you Dimitra.
David
Well, that is a third solution...
11 February, 2008 - 18:35 — dimitraWell, that would be a third solution: to actually have a JSF component wrapping your custom client widget.
You can read how this is done in the example:
http://demo.backbase.com/jsf_tutorials_4_1_2/pages/custom-component/inde...
and you can see the custom component in the page:
http://demo.backbase.com/jsf_tutorials_4_1_2/pages/custom-component/cust...
The example code is delivered in the tutorials.war inside the 4.1.2 JSF Edition package.
But, back to explaining what suggestions 1 and 2 were...
Lets assume you have defined a custom widget in your own client namespace in a element.xml page as follows:
xmlns:d="http://www.backbase.com/2006/tdl">
<d:namespace name="http://myCompany.com/">
<d:element name="myElement">
<d:template type="application/xhtml+xml">
<b><d:content /></b>
</d:template>
</d:element>
</d:namespace>
</d:tdl>
In the index.jsp you can write
<xi:include href="element.xml" />
...
<custom:myElement>bla</custom:myElement>
</bjsf:application>
and of course you would -as expected- see your custom widget.
So now if you want to dynamically load a subview that would contain this custom widget you can do the following:
Having the widget define its namespace
You could define the namespace on the widget itself (otherwise the xml fragment will not be valid.)
Therefore this was the first suggestion
<%@ taglib uri="http://www.backbase.com/2007/jsf" prefix="bjsf" %>
<f:subview id="myview3">
<bjsf:view>
<bjsf:outputText value="hello"/>
<custom:myElement xmlns:custom="http://myCompany.com/">Now it will work</custom:myElement>
</bjsf:view>
</f:subview>
(notice the namespace definition on the widget itself)
Having a wrapper to define its namespace
You can wrap the custom widget with another element in order to define the namespace (less elegant approach though... and quite unecessary)
<%@ taglib uri="http://www.backbase.com/2007/jsf" prefix="bjsf" %>
<f:subview id="myview3">
<bjsf:view>
<bjsf:outputText value="hello again"/>
<div xmlns:custom="http://myCompany.com/" >
<custom:myElement >Also works</custom:myElement>
</div>
</bjsf:view>
</f:subview>
OK
12 February, 2008 - 09:21 — DavidI really thank you, I didn't knew that I could define the namespace inside a custom component. Maybe it would be a good idea if I could define it inside a JSF component too, because if I use a behavior inside ,for instance, a bjsf:inputText and this page is loaded dynamically the namespace is not found. I can fix this problem with your second solution and wraps it inside a div element but I think that a nsMap attribute would be useful, don't you think?
Thanks again dimitra.
David
I`ve seen the nsMap property
22 May, 2008 - 11:10 — DavidI`ve seen the nsMap property in every jsf component in BB4.2.
Thanks
Kind regards
David